Connecter for hydrostatic conduits



July 14, 1931., E, L BEECHER 1,815,002

CONNECTER FOR HYDROSTATIC CONDUITS Filed Aug, 1, 1929 Patented July 14, 1931 UNIT-11D STATES PATENT ori-lcs IIUGIIEIN'IEZ L..BEECHER, 0F CLEVELAND, OHIO, ASSIGNOB T0 THE GABRIEL COMPANY, 0F

' GLEVELAND, OHIO, A CORPORATION Ol OHIO CONNECTER FOB HYDROSTAIC OONDUITS Appication med August 1, 1929. Serial No. 882,672.

' to transmit to a gauge the' pressure due to the head of a liquid the height of which head is to be determined by thegauge.

The general purpose and object of the invention is to provide a connecter which will `form an effective seal against the escape of gas byv means of a metal-to-metal A- urther object of the invention is to rovide a connecter of this character wherein the metal-to-metal contact consists of a circularline, the circle-being .of small diameter, whereby the parts in contact may be readily separated whenever the occasion ma require.

accomplish the foregoing objects inV and through t e construction and arrangement ot parts shown in the drawings, wherein Fig. 1 represents a longitudinal sectional view Athrough my connecter, showing the same applied to adjacent ends of conduit sections; Fig. 2 is a detail in section of one of the .members of the connecter and the attached end' of the cooperating conduit section; Fig. 3 is a detail in elevation of the connecting member a plied to the other conlduit section, the retaining nutbeing shown in section; and Fig. 4 a detail in section corresponding to the line 4:--4 of Fig. 1.

Describin the various parts by reference characters, and A. denote the two conduit sections to be connected. rlhe sectionA is provided with a connecting member com-4 prising a metallic body B, the said body having arbore therethrough the portions of which are indicated at 1, 2 and 3. The

portion 1 of the bore receives therein the end of the conduitsection A, the outer end of the bore being lared, as shown Aat 1, to

Areceive solder or other sealing material, iii-- dicated at C. The bore section 1 merges with the largerbore section 2 and the latter f in turn mergesI with the outwardly daring truste conical bore section 3. AFor convenience of description, the-end of. the member B which is provided with the outwardly daring bore .section 3 will be referred to asv the front end and the opposite end as the rear end. 'lhe connecting member B is provided adjacent its front end with an ex ternal thread 4 and, at the rear of said thread, with a hexagonal projection 5' for the reception of a wrench. v

The conduit section A is fitted within the bore 6 of a connecting member D. For convenience of description the end of the connecting member D which is presented toward the member B will be referred to as the front and its opposite end as the rear end. The rear end of the connecting member D is for-med into a sleeve of relatively small diameter, and the joint between the end of the said sleeve and the conduit section A. is closed by solder or other suitable material indicated at C', The sleeve merges with the enlarged front body portion D by means of'an outwardly'aring rusto conical surface 7 and the front end of the enlarged body portionD of this connecting member has a frusto conical exterior, as indicated at D2, the front end of the said frusto conical portion being of less diameter than the bore section 2 whereby it may be received therewithin.

Surrounding the sleeve of the member D and adapted to extend across the frusto conical surface 7 of the said connecting member is the flanged rear end of a third connecting member E, the same being formed as ya retaining nut provided within the rear por tion thereof with an outwardly daring rusto conical surface 8 mei-gi g with the extended threaded lbore 9, the internal thread on the nut beingadapted to mesh with the thread 4 on the connecting member B.

rlhe diametrically opposite portions of the bore section 3 form an angle of approximately 30, while the diametrically opposite portions of the tapered surface D2 of the member@ form an angle of approximately 21 whereby, when the part D2 is inserted within the bore section 3, there will be only a circular line of Contact between the members and D,'this line contact occurring at F--the junction `between the bore sections 2 r and 3.

softer material than the connecting member B so that, by setting up the nut E, the member D will receive a circular indentation of "small contact area. In practice, I have found 5 vthat phosphor bronze may be employed with advantage for the member B while manganese bronze, whichv is about 50% softerthan phosphor bronze, may be employed for the member It will be noted further that the angle formed between diametrically opposite portions of the tapered surface 8 in the nut E is less than the angle formed between diamertically opposite portionslofthe ta ered surface 7 on therear end'of the enlarged) portionof fthe connecting member D. By this arrangement, when the nut E is set up, an additional indentation circle G will be formed in the surface 8 by the contacting front end ofthe surface 7, the nut E being made of softer material than that employed for the connectin memberY D. In practice good'resultshave een secured'by employing i` yellow brass for the nut E, which material 2511s about one-third softer than the manga.

nese bronze which I have employed for .the member D.

As a further prevention against leakage,

the space between the two contact circlesvl` 30 and G is iilledwith pipe-joiiit compound,

indicated at H; but leakage will ordinarily be effectively prevented by the double-contact seal provided at F and G, even though the ipe compound will aid 1n preventing ang elakag'e through the threads. f rom the foregoing description, it will be f noted lthat the three Aparts comprising the connecter are made of materials having d ifferent degrees of hardness and that the 40 double seals are formed with a minimum circular contact area F and G between the members, which not only facilitates the easy separation of the parts when the nut is backed off, but assures perfect metal-to-metal circular contact with ,a minimum tighteni of the nut E. v v

aving thus described my invention, what I claim 1s:'- 1. As a means for connecting a pair of conduit sections, a connectin member adapted to be secured toan end o one of said sections and having a `bore therethrough, the rear of the bore being of outwardly flaring frusto-conical form, a connectin member 55 ada tedto bebecured to an end o the other con uit section and having a bore therethrough, the exterior of the second member 'being formed into a head having at the rear thereof a forwardly and outwardly Haring Y 00 frusto-conical surface and having. at the front thereof an inwardly tapered frustoconical surface, the frontend `of said heady *""beingofless external diameter than the rear of the frusto-conical portion ofthe of .65 the first member,` and a retaining nutmount -surface in the retaining nut.

arity engage the frusto-conical surface of the nut in a line contact, the said nut being adapted to be threaded on the adjacent end of the first member, the first member. being' of a harder material than the head, of the second member and the head of the second member being of harder-material than the retaining nut whereby circular indentations of-small contact area'will be formed where the front end of the head engages-the front 4vend of the frusto-conical bore of the 'first member and where they top Vof the frustoconical surface at the'rear of the head ,en gages the frusto-conical surface in the retaining nut. l

2. As a means for connecting a pair of conduit sections and in combination with saidsections, a connecting member secured to an end of one of said sections and having .a bore therethrough, a connecting i'member secured to an end of the other conduit section and having a boreftherethrough, the exterior of the second mentioned member being `formed into a head having at the rear thereof a forwardly and outwardlyiaring frusto-conical surface -and havin a surface adapted to abut against a sur ace of the,

first member, and' a retainin nut mounted on the second member and laving within the rear portion thereof :an l outwardly f lar ing frusto-conical surface of less `angularity than the frusto-conical surface at the rear of saidhead whereby the front end of the frusto-conical surface of the head'will 'engage the frusto-conical surface of the nut 1n a line contact, the said nut being adapted to be threaded on the adjacent end of the first member, the head of the second member being of harder material than the retaining nut whereby a circular indentation of small contact-area will be formed where the top of the fuiste-conical surface at the rear of the head engages the frusto-conical 3. As a means for connecting a pair of conduit sections, a connect' ada ted to be secured to an en of one-of sai wardly'iaring frusto-conical form, a connectin `'member adapted to be :secured to lan en of the other conduit section Yand havving a bore therethrough, the exterior of the second mentionedl vmember being formed intoa head'having at the rear thereof a foro said head bein'gof less'ex los , member sections and having a ,bore 'therethrough,the rear of the bore being of outwww@ termal iomooobf than the rom? of @lo rwof conical porfaom of tho boro of tho @mit mom ber, und o moinn: mm; mountedom tho secondi momboyf mmol (mvim Within Ehe mm portion horoof on. outwar Ey @ming mstoconico; surooo of oss anguomty than tho rustocouicl surface ai; tho Eem o' said.

hem7 whoz'oby'ftho from?, ond of tho Non fruso-conoal surface of tho hood will engogo the frgo-coniool surface @if ho nut 1n a line commet, the ssid mut being adapted.

to bo threaded@ the odjocon; om?. of the first momber, the: rs; momoer boing of harer motolra @man the hooo of the sooond member and the head of the second;b member being o hardop ma'folria than. the retaining nut whereby crcuor indonmions of small contac' are@ Wiki be forme@ Whom the front end of the hola-ofi engages the from' and of the frusso-ooniool boro of tho rsu member' and wher@ the nop of the fruso-oomioo surface at; tho mmf' of the hood engages the frusto-oonicl surfooo im the resoinor mut and sealing mmf/arid' Within the nut an surrounding the ortion of the head @m the end portion of t o rs', oommooting member therewithim signzmlzume o EUGENE L, BEECHER.

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